The Sex Discrimination Ordinance (“SDO”) prohibits discrimination on the grounds of sex, pregnancy, and marital status. Both direct and indirect discrimination are prohibited. Direct discrimination occurs where a party treats a person “less favorably” than another person in similar circumstances, except for the attribute of sex/pregnancy/marital status. Courts use a “but for test,” asking whether the complainant would not have received the less favorable treatment but for his/her sex/pregnancy/marital status. Indirect discrimination occurs where a seemingly uniform condition is applied, but the burden disproportionately falls on a group defined by sex/pregnancy/marital status.